Set in an experimental community on Mars in the year 2039, the Robot Wars series features 14-year-old virtual reality specialist Tyce Sanders. Life on the red planet is not always easy, but it is definitely exciting. Tyce finds that the mysteries of the planet point to his greatest discovery—a new relationship with God. He talks about his growing faith and curiosity in a manner that kids can relate to. Each book contains two exciting adventures. In the first adventure of Double Cross, Tyce makes a startling discovery–one that could change life for everyone in the universe. That is, if Tyce lives to uncover the truth. In the second adventure, a deadly comet catapults toward Mars. Can Tyce figure out how to stop it before it destroys the colony? Robot Wars is a repackaged and updated version of Mars Diaries. There are now five books in the series; each book contains two stories. These new books contain a foreword about how far science has brought us.

Ian has been spending his summers on Key West for years, helping his Uncle Gord at his dive shop and spending as much time as he can underwater. When he's not diving, he's admiring Sherri, the girl who works at the dive shop. A series of accidents leads Ian to believe his uncle is in grave danger, but the truth turns out to be more terrifying than he could have imagined.

Meet Justine McKeen, the Queen of Green. She talks a little too much, bosses a little too much, and tells the truth, just not all at once. She's trying to save the planet, one person at a time, and when she decides to get something done, it's a lot of fun. In Justine McKeen, Pooper Scooper, the third book in the Justine McKeen series, Justine gets her friends to help her clean up the dog poop in the park across from the school board's offices in an effort to get the attention of the superintendent of schools. She hopes the efforts of her crew of cheerful pooper scoopers will help get the superintendent to see that bringing their school librarian back to work is the right thing to do.

Jack's dad is tough on him, but he has learned to live with it. For the most part, Jack has it pretty good. He's a star player on his high school basketball team with everything going for him; scoring records, popularity and an easy path to a college scholarship. Then, the unbelievable happens, and bad news leads to worse news. Almost as fast as the crash that put his mom in the hospital, everything that Jack believes in starts to crumble. His only hope is to discover what's really going on, and quickly. If he doesn't, Jack may lose much more than a basketball career.